be quiet! Pure Power 850W PSU

be quiet! Pure Power 13 M | 850W Gold ATX 3.1 PSU

The be quiet! Pure Power 13 M | 850W power supply unit 20+4 pin ATX ATX Black delivers exceptional quiet operation and superior features for high-performance PC builds. This ATX 3.1 compliant and PCIe 5.1 compatible PSU offers peerless dependability with best-in-class features, making it ideal for both current-gen and next-gen graphics cards.

Exceptional quiet operation with semi-passive cooling

The Pure Power 13 M 850W features semi-passive cooling technology that keeps noise levels remarkably low at just 30.2 dB. The 120mm rifle-bearing fan operates silently during light loads and only spins up when needed, making this PSU perfect for quiet home offices, media centres, or gaming setups where noise reduction matters.

ATX 3.1 compliance and PCIe 5.1 readiness

Built to the latest ATX 3.1 standard, this PSU delivers stable power delivery for modern components. The PCIe 5.1 compatibility ensures seamless operation with next-generation graphics cards, while the included PCIe 5.1 cable and four PCIe 6+2 cables provide outstanding flexibility for current and future GPU configurations.

Fully modular design for clean builds

The fully modular cabling system allows you to connect only the cables you need, reducing clutter inside your case. With motherboard, CPU, PCIe, SATA, and peripheral cables included, you can achieve a clean, professional-looking build while maintaining optimal airflow throughout your system.

Comprehensive protection and reliability

Built with 100,000 hours MTBF reliability, this PSU includes extensive protection features: over current, over power, over voltage, overheating, short circuit, surge & inrush protection, and under voltage protection. The 25.09ms hold time ensures stable operation during brief power interruptions.

Box contents

• be quiet! Pure Power 13 M 850W PSU
• AC power cable
• CPU power cables
• PCIe power cables
• Peripheral (Molex) cables
• SATA power cables
• Mounting screws
• Cable ties

Check before you buy

• Confirm your case has sufficient space (150mm x 160mm x 86mm)
• Verify your GPU requires 850W or less total system power
• Check if you need additional PCIe cables for multi-GPU setups
• Ensure your motherboard uses standard 20+4 pin ATX connector

Frequently Asked Questions

Q: Is this PSU compatible with PCIe 5.0 graphics cards?

A: Yes, the Pure Power 13 M 850W is PCIe 5.1 compatible and works perfectly with PCIe 5.0 graphics cards.

Q: Does this PSU have enough power for high-end gaming builds?

A: Yes, 850W provides ample power for most high-end gaming systems, including powerful GPUs and multiple drives.

Q: What does semi-passive cooling mean?

A: The fan stops completely during low loads and only spins when needed, significantly reducing noise during everyday use.

Q: Is this PSU suitable for UK power outlets?

A: Yes, it accepts 100-240V input and includes the appropriate AC cable for UK use.

Q: How many SATA devices can I connect?

A: The PSU includes six SATA power connectors, supporting up to six SATA devices.

The Consultant’s verdict & warranty

The be quiet! Pure Power 13 M | 850W power supply unit 20+4 pin ATX ATX Black represents an excellent choice for users building quiet, reliable, and future-proof systems. Its combination of ATX 3.1 compliance, PCIe 5.1 readiness, and semi-passive cooling makes it particularly suitable for enthusiasts and professionals who value both performance and acoustic comfort. Covered by the standard Manufacturer Warranty.